Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
  • C09D183/10—Block or graft copolymers containing polysiloxane sequences
• • C—CHEMISTRY; METALLURGY
  • C03—GLASS; MINERAL OR SLAG WOOL
  • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
  • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
  • C03C25/10—Coating
  • C03C25/24—Coatings containing organic materials
  • C03C25/40—Organo-silicon compounds
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
  • C09D183/04—Polysiloxanes

Definitions

• the fiufling of the filaments not only subjects them to damage, but creates many problems during subsequent beaming, weaving, chopping, and other mechanical processes which the fibers must undergo prior to their ultimate use as a fabric or as a reinforcing for plastics.
• an electrostatic charge on the short lengths of fibers causes a collection of the charged fibers on surrounding surfaces, and an inherent loss of the fibers occurs during the transfer from the chopping operation to the resin matrix.
• the amount of static electricity which is generated on the resin coated glass fibers is inversely proportional to the humidity of the air. It is not possible in all instances to control the humidity in the areas Where the fibers are chopped and are incorporated with the resin; and in some operations, as for example in the making of glass fiber reinforced polyester resin panels, the distribution of the fibers on dry days can be so poor as to cause a sufliciently high percentage of nonuniformly reinforced product as to require a shutdown of the panel making operation.
• LIt has been known heretofore that ionic materials can be added to the resin mixture that is applied to the fibers to cut down the amount of static electricity which is generated on the fibers.
• ionic materials interfere with the bond that is 3,567,570 Patented Mar. 2, 1971 produced between the resin coating and the glass fibers, and in some instances will also decrease the strength of the resin composition and/or affect its appearance.
• Still other difliculties are created by the addition of the ionic materials sometimes called antistatic agents, so that in many instances these materials cannot be used; and in substantially all instances, there is a reduction in the physical and other properties of the product.
• An object of the invention is the provision of a new and improved coating material for glass fibers.
• the organosiloxane must be substantially free of ionic groups, and all silicon atoms not connected to silicon or carbon atoms by oxygen bridges are connected to hydrocarbons which may contain some functional groups.
• the hydrocarbons attached to the silicon should be in a weight ratio to the silicon of 1.5 to 1 and 6 to 1, and preferably below 5.5 to 1, although where other hydrocarbon groups are attached to the siloxane through oxygen linkages, only the total hydrocarbon-silicon ratio need be at least 1.5 to 1. No more than approximately 30 percent of the hydrocarbon groups attached to the silicon atoms should have functional radicals, as for example double bonds, oxirane rings, amine groups, hydroxyl groups, etc.
• a size composition of the invention has the following ingredients in percent by weight.
• the gamma methacryloxy propyltriidentical ingredients obove excepting that the methyl methoxy silane is then added to the emulsion, following phenyl organopolysiloxane is omitted, ascrap rate of more which the methylphenyl polysiloxane is slowly added and than approximately 5 percent is obtained because of unstirred foraminimum of 30 minutes. even distribution of the chopped fibers onto the resin.
• the above Packages are then brought together the methyl phenyl organopolysiloxane is used, less than 1 into a substantially untwisted sixty end roving, which is percent of the chopped fibers are lost during the chopping again coiled into a package. and delivery operation to the resin film.
• the coated fibers made as above described can be Glass fibers sized as above described using the organoused to reinforce various types of resins, as for example, siloxane will have many other uses as for example in the polyester resins, epoxy r si s, polyvinyl a tat r production of glass fiber reinforced plastic pipe and tanks Polyurethane resins, Poll/Olefin resins, p y y and made by the filament winding process.
• the glass fibers other thermosetting resins as for example, phenol form- 00 sized as above described wherein the coating contains aldehyde resins.
• the fibers are the organopolysiloxane has noticeably less fuzzing of used to reinforce a polyester resin to produce a light the yarn usually produced by static electricity created as transmitting clear polyester panel.
• the panel is produced the yarn is drawn over the numerous guide surfaces used by feeding the 60 end roving into a chopper of convenin the filament winding process.
• the yarn remains closely tional design which cuts the roving into approximately bound together during the filament winding operation to one inch lengths following which they are delievered to produce a closer lay of the fibers and therefore, a greater a hood containing an air jet which directs the fibers at a and more uniform fiber loading of the resulting product, polyethylene film which covers a moving conveyor belt. o that the product has greater strength.
• EXAMPLE 2 A size was prepared of the following materials in percent by weight.
• the organopolysiloxane (5) has the following formula:
• the same type of glass fibers when coated with the identical size material excepting that the organosiloxane is omitted produced a filament wound pipe having a wall thickness of 0.105 inch, and only withstood 1,000 pressure cycles.
• organosiloxanes of the present invention can be used with substantially any resin material having a high percent of hydrocarbons therein to produce films having good antistat properties.
• These films can be predominantly polyester resins, epoxy resins, polyvinyl acetate resins, acrylic resins, polyolefin resins, and thermosetting resins such as polyurethanes, phenol aldehyde resins, ureaformaldehyde resins, etc.
• a siloxane alkyd copolymer is produced by heating the following materials to 180 C. for one half hour and then raising the temperature slowly to 230 C. and holding at this temperature for 3%. hours.
• the above materials are thinned with 10 percent xylene and completely mixed before being cooked.
• the reaction product is then diluted to an percent solution using a 50:50 mixture of xylenol and normal butanol.
• the copolymer produced as above described is a silalkyd copolymer and an emulsion of this copolymer is prepared using the following materials.
• This emulsion is prepared by adding the surfactant to the copolymer, following which this mixture is added to water at a temperature of approximately 65 F.
• the gamma amino propyl trimethoxy silane and acetic acid is then added and thoroughly mixed to provide an emulsion for application to the fibers.
• Glass fibers are coated with this material in the same manner as given in Example 1 and panels produced in a room having a 75 percent relative humidity had less than 1 percent of scrap due to poor distribution of the fibers.
• the cooking procedure used in Example 3 is essentially a one step process wherein the polyester resin is formed at the same time that it is being cooked with the siloxane.
• the silalkyd copolymer can also be produced in a two step process wherein the polyester prepolymer is first formed by reacting the glycol and acid anhydride together, following which this alkyd resin is reacted with a siloxane having hydroxyl groups thereon. These hydroxyl groups can be attached directly to the silane where they are in the nature of an ionic material, or they can be on glycol groups attached to the silane.
• EXAMPLE 4 A commercial alkyd resin purchased from the Koppers Company under the trade name Rezyl 3l05 is reacted with the siloxane given in Example 3 in the ratio of 75 parts of the polyester to 25 parts of the siloxane. The reaction is carried out at C. under refluxing conditions for approximately five hours.
• the Rezyl polymer is a reaction product of 34 parts by weight of hydroxylated soya oil and 41 parts by weight of phthalic anhydride cooked to an acid number of from 4 to 10.
• the finished material contains 25 percent by weight of a xylenol diluent.
• Example 3 When this material is incorporated into a size in the same manner as given in Example 3 and similarly applied to glass fibers, they likewise can be used to produce reinforced polyester panels with substantially no loss of the finished product due to nonuniform distribution of the glass fibers onto the impregnating resin.
• siloxane having two hydroxyl groups thereon can be used to form a silalkyd copolymer using the procedure described in either Examples 3 or 4.
• suitable silalkyd copolymers are prepared using the materials D and F given above when substituted for the siloxane of Example 3 and cooked in the same manner as given in Example 3.
• EXAMPLE 5 A size composition having the following ingredients in percent by weight was prepared.
• Soluble phenolic-epoxide material (3 of Example 1) 0.66 Polyvinyl actate 2.73 Glacial acetic acid 0.30 Gamma methacryloxy propyltrimethoxy silane 0.35 Methyl phenyl organopolysiloxane (4 of Example 1) 33 percent water emulsion 0.50 Baymal 0.15 Water Balance An emulsion of the above material is made generally in the same manner as given for that of Example 1 above, excepting that a water dispersion of the Baymal is first made, and this dispersion is added to an emulsion of the other materials.
• Fibers coated with this material can be chopped and added to resin in the panel forming process described in Example 1 with the same general lack of static generating properties as do the fibers of Example 1. The fibers, however, become wetted out by the resin more quickly than do the fibers of Example 1.
• a reinforced plastic article comprising glass fibers having a coating thereon consisting substantially of a mixture of: emulsion particles of an organosiloxane devoid of ionic groups and the silicon atoms of which are connected to atoms from the group consisting of oxygen bridges and carbon, and wherein the hydrocarbon groups to silicon weight ratio is between 1.5 and 6; and from to approximately 1,000 times the weight of said organosiloxane of emulsion particles of an organic film former that is compatible with said organosiloxane; said emulsion particles being dispersed throughout a liquid containing a coupling agent from the group consisting of a metal oxide, :1 Werner complex and an organosilane; said coated fibers being surrounded by and acting as a reinforcing for a polyester matrix resin.
• siloxane is a methyl phenyl siloxane and is present with the film former as an admixture.
• a translucent polyester panel reinforced by chopped glass fibers having a coating thereon of: emulsion particles of an organosiloxane devoid of ionic groups and the silicon atoms of which are connected to atoms from the group consisting of oxygen bridges and carbon, and wherein the hydrocarbon groups to silicon weight ratio is between 1.5 and 6; and from 0 to approximately 1,000 times the weight of said organosiloxane of emulsion particles of an organic film former that is compatible with said organosiloxane; said emulsion particles being dispersed throughout a liquid containing a coupling agent from the group consisting of a metal oxide, a Werner complex and an organosilane.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Materials Engineering (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Wood Science & Technology (AREA)
• Geochemistry & Mineralogy (AREA)
• General Chemical & Material Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Surface Treatment Of Glass Fibres Or Filaments (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Reinforced Plastic Materials (AREA)
• Moulding By Coating Moulds (AREA)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

Country Status (9)

Cited By (6)

Families Citing this family (9)

• 1967
  • 1967-08-14 US US660230A patent/US3567570A/en not_active Expired - Lifetime
• 1968
  • 1968-08-02 GB GB1250194D patent/GB1250194A/en not_active Expired
  • 1968-08-08 CH CH1189568A patent/CH489440A/de not_active IP Right Cessation
  • 1968-08-12 DE DE1769961A patent/DE1769961C3/de not_active Expired
  • 1968-08-13 SE SE10906/68A patent/SE337661B/xx unknown
  • 1968-08-14 LU LU56713D patent/LU56713A1/xx unknown
  • 1968-08-14 BE BE719474D patent/BE719474A/xx not_active IP Right Cessation
  • 1968-08-14 FR FR1599730D patent/FR1599730A/fr not_active Expired
  • 1968-08-14 NL NL6811531A patent/NL6811531A/xx unknown

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